Cephaloleia renei, Sekerka, 2017

Sekerka, Lukáš, 2017, Taxonomic changes within Imatidiini and Hybosispini (Coleoptera: Chrysomelidae: Cassidinae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 57 (2), pp. 351-380 : 362-364

Cephaloleia renei sp. nov.

( Fig. 10 )

Cephaloleia kolbei (misidentification): STAINES & GARCÍA- ROBLEDO (2014): 198 (partim – Ecuadorian specimens).

Type locality. Ecuador, Napo Province, 2 km S of Puerto Misahuallí, 01°02′46″S, 77°39′23″W, 450 m a.s.l.

Type material. HOLOTYPE: ♂, glued, ‘ECUADOR Napo prov. | 2 km S of Puerto Misahuallí | 01°02’46”S, 77°39’23”W, 450m | second growth 8.xii.2009 | MAR: Calathea sp. | L. Sekerka & K.Štajerová lgt.[g, p, cb]’ ( NMPC) . PARATYPES: ECUADOR: NAPO: 13 ♂♂ 9 ♀♀, same data as holotype ( LSPC, 1 ♀ NMPC) ; 2 ♂♂ 4 ♀♀,‘ECUADOR Napo prov. | 2 km S of Puerto Misahuallí | 439m, 01°02’S / 77°39’W, 450m | 8 XII 2009 | leg. L. Borowiec [w, p, cb]’ (1 ♂ 1 ♀ BMNH, 2 ♀♀ MCSNM, 1 ♂ 1 ♀ SDEI) ; 4 ♂♂ 8 ♀♀,‘ECUADOR Napo prov. | Río Puno (10 km SE of | Puerto Misahuallí ), 417m | 01°02‘S / 77°36‘W | 13 XII 2009 leg. L. Borowiec [w, p, cb]’ ( LSPC, 1 ♂ 1 ♀ MNHN, 1 ♂ 1 ♀ SEMC) ; 2 ♂♂ 1 ♀, glued, ‘ECUADOR Napo prov. | Río Hollín 6.xii.2009 | Narupa-Loreto Rd. 1068m | 0°43‘04“S, 77°38‘19“W | MAR: Calathea sp. | L. Sekerka & K. Štajerová lgt. [g, p, cb]’ ( LSPC) . ORELLANA: 1 ♀, glued, ‘ECUADOR: Napo | Huaticocha | 0°45.22‘S / 77°27.84‘W | VIII-19-1997 | Fred G. Andrews [w, p, cb] || DUPLICATE | RETAINED FROM | THE CALF. DEPT. | FOOD & AGRIC. | COLLECTION [w, p, cb] ’ ( USNM) ; 1 ♂, ‘ECUADOR Orellana prov. | Río Suyuno (7 km N of Loreto) | 426m, | 00°37‘S / 77°17‘W, | 10 XII 2009, leg. L. Borowiec [w, p, cb]’ ( LSPC) . SUCUMBÍOS: 2 ♂♂ 2 ♀♀, 4 spec., glued, ‘ECUADOR Sucumbíos pr. | Cascada San Rafael | 00°06’15”S, 77°35’13”W | montane forest 1300m | MAR: Calathea sp. | D. Windsor lgt. 20.-25.vii.2008 [g, p, cb]’ (1 ♂ 1 ♀ BPBM, 1 ♂ 1 ♀ LSPC, 4 spec. DWPC) ; 1 ♀, glued, ‘ECUADOR: Napo | Limoncocha | 3 June 1977 | W. E. Steiner [w, p, cb] || *m [w, p, cb] ’ ( USNM) .

Description. Body elongate, parallel-sided. Length: 7.6–9.5 mm.

Body yellow, elytra with elongate black spot on each humerus and common transverse preapical black spot; apical 1/5 length of elytra yellow, lateral margins entirely yellow. Humeral spots not obviously emarginate, slightly vary in size. Transverse preapical spot sligthly to distinctly emarginate on anterior margin.

Frons with broad and low carina extending from clypeus but not continuing to vertex. Frons and vertex smooth, shiny, and finely and sparsely punctate. Vertex flat and transverse, with moderately deep circular basal impression. Head moderately constricted beyond eyes. Eyes normal, large, not projecting from dorsal outline of head. Gena large, smooth, shiny and finely punctate. Mouthparts typical, not modified. Antennae moderately long, thick with two basal antennomeres sparsely pubescent, remainder densely pubescent. Antennomere I elongate, only with short and sparse pubescence and with apex slightly projecting anteriad on ventral side. Antennomere II globose in both sexes. Antennomeres III–IV elongate with distinctly projecting apices on inner side, thus appearing subtriangular; V–VI with very minutely projecting apices, remaining antennomeres unmodified. In females all antennomeres from III on unmodified with rounded apices. Length ratio of antennomeres: 100: 69: 75: 68: 66: 62: 62: 65: 69: 69: 112. Antennomere III 1.1× as long as II, antennomeres IV, V, VIII, IX, X subequal in length, VI and VII equally long. Antennomeres thicker from VI onwards, VII–XI subqadratic, 1.2× as long as wide. Antennomere XI 1.1× as long as I and with rounded apex.

Pronotum as wide as long, for most of length parallel-sided, basal corners sharp and slightly divergent, thus pronotum appears slightly wider at base than around midlength. Anterior 1/6 regularly narrowing anteriad and forming anterior corners. Anterior corners subacute, broad, and distinctly depressed thus separated from disc. Anterior margin deeply emarginate between corners, regularly convex. Setigerous pores not on tubercles, barely visible, situated anteriorly in curved points, and bearing single very long seta. Due to weakly delimited setigerous pores and quite fragile setae pronotum appears to lack setae in most of paratypes. Lateral margins not explanate, slightly swollen and forming narrow and barely canaliculate ridge. Disc weakly and regularly convex without any impressions, strongly shiny, finely and sparsely macropunctate. Surface smooth with faint and barely visible shagreen. Basal margin bisinuate and smooth.

Scutellum subtriangular, smooth and distinctly less shiny than pronotum due to faint shagreen.

Base of elytra distinctly wider than base of pronotum. Basal margin smooth and bisinuate. Humeral angles broadly rounded and not projecting. Humeral calli distinctly convex, smooth, shiny and impunctate, not separated by explanate margin and thus forming anterior corners of elytra. Elytra overall regularly and weakly convex, smooth, moderately shiny with faint shagreen and without impressions. Punctation moderately large, arranged in ten mostly regular and not impressed rows plus scutellar row, apical 1/5 of elytra (yellow portion between apical margin and transverse black spot) irregularly punctate. Scutellar row long, formed by ca. 14 punctures and reaching to basal 1/4 of elytra. Punctures in rows more or less regularly arranged, interspaces as wide as puncture diameter or narrower. First and ultimate rows with smaller and denser arranged punctures than remaining rows. Ultimate row regular without distinct vacancies. Intervals smooth and shiny, 1–2× as wide as rows, not elevated or impressed. Interval 5 and mainly 7 with several additional irregular punctures. Lateral margins narrow, barely explanate and canaliculate in central part 3/5 of length. Explanate part smooth and shagreen, impunctate. Outer margin moderately swollen and smooth, in apical 1/5 declivous. Elytral apices rounded and slightly emarginate at suture.

Prosternal collar smooth and shiny. Prosternal process broad, strongly expanded apically and with weak medial impression. Epipleura smooth, shagreen, and bare. Thoracic ventrites finely and sparsely punctate, and shagreen. Abdominal ventrites densely micropunctate and pubescent with long semiadherent setae. Ventrites I and II fused, suture indicated only laterally.

Sexual dimorphism more or less distinct, antennomeres III–IV with slight projection on inner side of apex in males and globose in females. Apical margin of ventrite V emarginate in males and bisinuate with slightly pronounced central part in females.

Legs normal, unmodified, last tarsomere elongate, projecting beyond sole of penultimate. Claws simple, divergent.

Differential diagnosis. Cephaloleia renei sp. nov. is most similar to C. fouquei sp. nov. ( Fig. 9 ) as both have similar size and shape. The latter differs in antennomere I with dense and long pubescence on ventral side (vs. without such pubescence), emarginate humeral spot on elytra (vs. not emarginate), antennomeres II–III weakly but distinctly triangular (vs. barely triangular), and pronotum moderately densely punctate with moderately coarse punctures (vs. sparsely punctate with much finer punctures). Cephaloleia kolbei ( Fig. 11 ) differs in larger size, length above 10 mm (vs. 7.0– 8.5 mm) and strongly triangular antennomeres II–IV (vs. only II–III barely triangular). See also differential diagnosis under C. fouquei .

Host plant. Maranthaceae : Calathea variegata (K. Koch) Linden ex Körn.

Biology. Specimens from the type locality were collected inside young rolled leaves of Calathea variegata . Remaining specimens were collected also in leaf-rolls of various species of Calathea . Adult beetles as well as larvae were clearly eating leaf surface when the leaf was unrolled.

Etymology. The species is dedicated in loving memory to René Fouquè (1980–2016), friend and enthusiastic entomologist, who was world specialist on the tenebrionid tribe Stenosini .

Remarks. Specimens of C. kolbei without locality data and those from Ecuador (all in USNM) published by STAINES & GARCÍA- ROBLEDO (2014) belong to C. renei sp. nov. The three specimens without locality labels are strongly damaged and thus are not included in the type series. The two from Ecuador are designated as paratypes. See also remarks under C. fouquei sp. nov.

Distribution. Ecuador: Napo, Orellana and Sucumbíos.

Figures

Figs 9–14. 9 – Cephaloleia fouquei sp. nov. (holotype, 7.1 mm); 10 – Cephaloleia renei sp. nov. (holotype, 8.1 mm); 11 – Cephaloleia kolbei Weise, 1910 (Colombia: Río Dagua, LSPC, 9.5 mm); 12 – Serratispa quadricostata Staines, 2002 (holotype, 4.2 mm); 13 – Xanthispa miniacea (Blanchard, 1843) (Boivia: Potrerillo del Guenda, LSPC, 6.4 mm); 14 – Xanthispa cimicoides (Guérin-Méneville, 1844) (French Guyana: Le Larivot, LSPC, 6.5 mm).